From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id D348F7F63 for ; Mon, 18 Mar 2013 09:50:14 -0500 (CDT) Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by relay2.corp.sgi.com (Postfix) with ESMTP id 9B6D930406B for ; Mon, 18 Mar 2013 07:50:14 -0700 (PDT) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by cuda.sgi.com with ESMTP id mbVbKu13tyYpixE4 for ; Mon, 18 Mar 2013 07:49:59 -0700 (PDT) Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r2IEnwRh015153 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 18 Mar 2013 10:49:59 -0400 Received: from bfoster.bfoster (dhcp-189-135.bos.redhat.com [10.16.189.135]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id r2IEnwSf021459 for ; Mon, 18 Mar 2013 10:49:58 -0400 From: Brian Foster Subject: [PATCH v5 1/6] xfs: reorganize xfs_iomap_prealloc_size to remove indentation Date: Mon, 18 Mar 2013 10:51:43 -0400 Message-Id: <1363618308-53594-2-git-send-email-bfoster@redhat.com> In-Reply-To: <1363618308-53594-1-git-send-email-bfoster@redhat.com> References: <1363618308-53594-1-git-send-email-bfoster@redhat.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfs@oss.sgi.com The majority of xfs_iomap_prealloc_size() executes within the check for lack of default I/O size. Reverse the logic to remove the extra indentation. Signed-off-by: Brian Foster Reviewed-by: Dave Chinner Reviewed-by: Ben Myers Reviewed-by: Mark Tinguely --- fs/xfs/xfs_iomap.c | 63 ++++++++++++++++++++++++++------------------------- 1 files changed, 32 insertions(+), 31 deletions(-) diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c index c8cb337..344557e 100644 --- a/fs/xfs/xfs_iomap.c +++ b/fs/xfs/xfs_iomap.c @@ -381,42 +381,43 @@ xfs_iomap_prealloc_size( int nimaps) { xfs_fsblock_t alloc_blocks = 0; + int shift = 0; + int64_t freesp; alloc_blocks = xfs_iomap_eof_prealloc_initial_size(mp, ip, offset, imap, nimaps); - if (alloc_blocks > 0) { - int shift = 0; - int64_t freesp; - - alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, - rounddown_pow_of_two(alloc_blocks)); - - xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); - freesp = mp->m_sb.sb_fdblocks; - if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) { - shift = 2; - if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT]) - shift++; - if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT]) - shift++; - } - if (shift) - alloc_blocks >>= shift; - - /* - * If we are still trying to allocate more space than is - * available, squash the prealloc hard. This can happen if we - * have a large file on a small filesystem and the above - * lowspace thresholds are smaller than MAXEXTLEN. - */ - while (alloc_blocks && alloc_blocks >= freesp) - alloc_blocks >>= 4; + if (!alloc_blocks) + goto check_writeio; + + alloc_blocks = XFS_FILEOFF_MIN(MAXEXTLEN, + rounddown_pow_of_two(alloc_blocks)); + + xfs_icsb_sync_counters(mp, XFS_ICSB_LAZY_COUNT); + freesp = mp->m_sb.sb_fdblocks; + if (freesp < mp->m_low_space[XFS_LOWSP_5_PCNT]) { + shift = 2; + if (freesp < mp->m_low_space[XFS_LOWSP_4_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_3_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_2_PCNT]) + shift++; + if (freesp < mp->m_low_space[XFS_LOWSP_1_PCNT]) + shift++; } + if (shift) + alloc_blocks >>= shift; + + /* + * If we are still trying to allocate more space than is + * available, squash the prealloc hard. This can happen if we + * have a large file on a small filesystem and the above + * lowspace thresholds are smaller than MAXEXTLEN. + */ + while (alloc_blocks && alloc_blocks >= freesp) + alloc_blocks >>= 4; +check_writeio: if (alloc_blocks < mp->m_writeio_blocks) alloc_blocks = mp->m_writeio_blocks; -- 1.7.7.6 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs